drm/xe: Nuke VM's mapping upon close

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[ Upstream commit 074e40d9c2 ]

Clear root PT entry and invalidate entire VM's address space when
closing the VM. Will prevent the GPU from accessing any of the VM's
memory after closing.

v2:
 - s/vma/vm in kernel doc (CI)
 - Don't nuke migration VM as this occur at driver unload (CI)
v3:
 - Rebase and pull into SVM series (Thomas)
 - Wait for pending binds (Thomas)
v5:
 - Remove xe_gt_tlb_invalidation_fence_fini in error case (Matt Auld)
 - Drop local migration bool (Thomas)
v7:
 - Add drm_dev_enter/exit protecting invalidation (CI, Matt Auld)

Signed-off-by: Matthew Brost <matthew.brost@intel.com>
Reviewed-by: Thomas Hellström <thomas.hellstrom@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20250306012657.3505757-12-matthew.brost@intel.com
Signed-off-by: Sasha Levin <sashal@kernel.org>

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This commit is contained in:

Matthew Brost 2025-03-05 17:26:36 -08:00 • committed by Greg Kroah-Hartman

parent a3642d2d73

commit 623669ae7a

5 changed files with 73 additions and 0 deletions

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22

drivers/gpu/drm/xe/xe_gt_tlb_invalidation.c

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2

drivers/gpu/drm/xe/xe_gt_tlb_invalidation.h

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14

drivers/gpu/drm/xe/xe_pt.c

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3

drivers/gpu/drm/xe/xe_pt.h

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32

drivers/gpu/drm/xe/xe_vm.c

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